Brake system and control method and device thereof, electronic equipment and automobile

Abstract

The invention discloses a braking system and a control method and device thereof, electronic equipment and an automobile, and relates to the technical field of automobiles. The braking system comprises a vehicle control unit, an electric air compressor, an air processing unit, a front loop air storage cylinder, a rear loop air storage cylinder, a parking loop air storage cylinder, an auxiliary loop air storage cylinder, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve. The air storage cylinders of the four loops are respectively connected with the air processing unit through the four electromagnetic valves, the four electromagnetic valves are connected with a vehicle control unit, and the electric air compressor is connected with the vehicle control unit and the air processing unit; when the vehicle is braked emergently, the starting of the air compressor and the on-off of the four electromagnetic valves are controlled according to the preset emergency strategy, so that the electric air compressor is ensured to preferentially inflate the loop capable of improving the braking efficiency most quickly, and the emergency braking performance of the new energy vehicle when the braking air pressure is relatively low is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a braking system and a control method, device, electronic equipment and automobile thereof. Background Art

[0002] As a key core component of the braking system of new energy vehicles, the accuracy of the start-stop control of the electric air compressor has a very significant impact on the braking safety of the vehicle.

[0003] In the current start-stop control scheme of the electric air compressor of new energy vehicles, it is usually directly compared with the preset pressure value based on the pressure monitoring value in the braking system. When the pressure monitoring value in the braking system is lower than the preset pressure value, the electric air compressor starts to work and supplies air to the braking system. When the pressure monitoring value in the braking system is higher than the preset pressure value, the electric air compressor stops working.

[0004] When adopting the start-stop control scheme of the electric air compressor of the new energy vehicle mentioned above, if the preset pressure value is set high, the electric air compressor will start and stop frequently, the energy consumption of the whole vehicle will increase, and the service life of the electric air compressor will be shortened. Therefore, under normal circumstances, the preset pressure value is set low. However, when the braking air volume suddenly increases, there may be a safety hazard that the electric air compressor cannot be started in time and the brake air pressure is insufficient, resulting in the failure to stop the vehicle. It can be seen that the emergency braking performance of new energy vehicles is insufficient when the brake air pressure is low. Summary of the invention

[0005] The main purpose of this application is to propose a braking system and its control method, device, electronic equipment and automobile, aiming to improve the emergency braking performance of new energy vehicles when the brake air pressure is low.

[0006] In a first aspect, the present application provides a braking system, including: a vehicle controller, an electric air compressor, an air handling unit, a front circuit air reservoir, a rear circuit air reservoir, a parking circuit air reservoir, an auxiliary circuit air reservoir, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve;

[0007] The front circuit air reservoir is connected to the air handling unit through the first solenoid valve, the rear circuit air reservoir is connected to the air handling unit through the second solenoid valve, the parking circuit air reservoir is connected to the air handling unit through the third solenoid valve, and the auxiliary circuit air reservoir is connected to the air handling unit through the fourth solenoid valve;

[0008] The first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all connected to the vehicle controller;

[0009] The electric air compressor is connected to the vehicle controller and the air handling unit.

[0010] In a second aspect, the present application provides a braking system control method, which is applied to a vehicle controller in the braking system described in the aforementioned embodiment, and the method comprises:

[0011] Acquiring the displacement of the brake pedal, wherein the displacement of the brake pedal includes: the displacement distance of the brake pedal and the displacement speed of the brake pedal;

[0012] Determining the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and a preset braking condition determination rule;

[0013] If the current braking condition is an emergency condition, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to be on and off according to a preset emergency strategy.

[0014] In an optional implementation manner, judging the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and a preset braking condition judgment rule includes:

[0015] If the displacement distance of the brake pedal is greater than a preset brake pedal displacement distance, and / or the displacement speed of the brake pedal is greater than a preset brake pedal displacement speed, it is determined that the current braking condition is an emergency condition.

[0016] In an optional implementation manner, if the current braking condition is an emergency condition, controlling the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to a preset emergency strategy includes:

[0017] If the current braking condition is the emergency condition, collecting and acquiring the air pressure of the front circuit air reservoir and the air pressure of the rear circuit air reservoir;

[0018] If the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both less than or equal to the preset air tank pressure, the electric air compressor is started and the working state of the anti-lock braking device is acquired, wherein the anti-lock braking device includes: a front wheel anti-lock braking device and a rear wheel anti-lock braking device;

[0019] According to the working state of the anti-lock braking device, a corresponding preset emergency strategy is selected to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve.

[0020] In an optional implementation, the selecting and executing a corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to the working state of the anti-lock braking device includes:

[0021] If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, the first solenoid valve and the second solenoid valve are controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

[0022] In an optional implementation, the selecting and executing a corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to the working state of the anti-lock braking device includes:

[0023] If the working state of the anti-lock device is that the front wheel anti-lock device is activated and the rear wheel anti-lock device is not activated, the second solenoid valve is controlled to be closed until the front wheel anti-lock device is activated and the rear wheel anti-lock device is activated, or the air pressure of the rear circuit air reservoir is greater than the preset air reservoir pressure, the first solenoid valve is controlled to be closed until the air pressure of the front circuit air reservoir and the air pressure of the rear circuit air reservoir are both greater than the preset air reservoir pressure, the third solenoid valve and the fourth solenoid valve are controlled to be closed until the dryer is unloaded and the electric air compressor is turned off;

[0024] If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is activated, the first solenoid valve is controlled to be closed until the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, or the air pressure of the front circuit air tank is greater than the preset air tank pressure, the second solenoid valve is controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

[0025] In an optional implementation, the selecting and executing a corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to the working state of the anti-lock braking device includes:

[0026] If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is not activated, the first solenoid valve and the second solenoid valve are controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

[0027] In a third aspect, the present application provides a brake system control device, comprising:

[0028] A collection module, used for collecting and acquiring the displacement of the brake pedal, wherein the displacement of the brake pedal includes: the displacement distance of the brake pedal and the displacement speed of the brake pedal;

[0029] A judgment module, used for judging the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and a preset braking condition judgment rule;

[0030] The control module is used to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to a preset emergency strategy if the current braking condition is an emergency condition.

[0031] In a fourth aspect, the present application provides an electronic device, comprising: a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, the processor and the storage medium communicate via the bus, and the processor executes the machine-readable instructions to perform a method as described in any of the foregoing embodiments.

[0032] In a fifth aspect, the present application provides a car, comprising a braking system as described in the aforementioned embodiment or an electronic device as described in the aforementioned embodiment.

[0033] The beneficial effects of this application are:

[0034] The braking system provided in the embodiment of the present application includes: a vehicle controller, an electric air compressor, an air processing unit, a front circuit air reservoir, a rear circuit air reservoir, a parking circuit air reservoir, an auxiliary circuit air reservoir, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve; the front circuit air reservoir is connected to the air processing unit through the first solenoid valve, the rear circuit air reservoir is connected to the air processing unit through the second solenoid valve, the parking circuit air reservoir is connected to the air processing unit through the third solenoid valve, and the auxiliary circuit air reservoir is connected to the air processing unit through the fourth solenoid valve; the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve The magnetic valves are all connected to the vehicle controller; the electric air compressor is connected to the vehicle controller and the air handling unit; when it is determined that the current braking condition of the vehicle is an emergency condition, the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled according to a preset emergency strategy, and then the electric air compressor is controlled to selectively inflate the front circuit air cylinder, the rear circuit air cylinder, the parking circuit air cylinder, and the auxiliary circuit air cylinder, so that during the emergency condition, the limited air filling volume of the electric air compressor is preferentially used to inflate the air cylinder of the circuit that can most quickly improve the braking efficiency, thereby ensuring that the vehicle's brake air pressure is sufficient to the greatest extent, thereby improving the emergency braking performance of new energy vehicles when the brake air pressure is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of the structure of a braking system provided in one embodiment of the present application;

[0037] Figure 2 A schematic diagram of a braking system control method flow chart provided in an embodiment of the present application;

[0038] Figure 3 A schematic flow chart of a brake system control method provided by another embodiment of the present application;

[0039] Figure 4 A schematic diagram of the structure of a brake system control device provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0043] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures. The terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device that includes the element.

[0044] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0045] The current start-stop control scheme of the electric air compressor of new energy vehicles usually specifies a preset pressure value. When it is detected that the pressure value in the brake system drops to or falls below the preset pressure value due to brake bleeding, the electric air compressor is turned on to inflate the brake system; if the above-mentioned preset pressure value is set too large, it will cause the pressure value in the brake system to decrease slightly, and the electric air compressor will start and inflate the brake system. Frequent starts and stops will increase energy consumption and shorten the life of the electric air compressor, affecting the stability of the brake system. Therefore, the preset pressure value is usually set relatively small. However, with this setting, when the vehicle encounters emergency braking or overloading, the pressure value in the brake system may be at a low level, which will lead to insufficient brake pressure and a safety hazard. It can be seen that the emergency braking performance of new energy vehicles when the brake pressure is low is insufficient. The main purpose of this application is to improve the emergency braking performance of new energy vehicles when the brake pressure is low.

[0046] Figure 1 A schematic diagram of the braking system structure provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the braking system includes: a vehicle controller, an electric air compressor, an air handling unit, a front circuit air reservoir, a rear circuit air reservoir, a parking circuit air reservoir, an auxiliary circuit air reservoir, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve.

[0047] The front circuit air reservoir is connected to the air handling unit via the first solenoid valve, the rear circuit air reservoir is connected to the air handling unit via the second solenoid valve, the parking circuit air reservoir is connected to the air handling unit via the third solenoid valve, and the auxiliary circuit air reservoir is connected to the air handling unit via the fourth solenoid valve.

[0048] The first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all connected to the vehicle controller.

[0049] The electric air compressor is connected to the vehicle controller and the air handling unit.

[0050] Exemplarily, the above-mentioned vehicle controller may refer to a device with computing and processing capabilities, such as a VCU (Vehicle Control Unit), an MCU (Microcontroller Unit), or the like.

[0051] The front circuit air cylinder is connected to the air handling unit via the first solenoid valve, the rear circuit air cylinder is connected to the air handling unit via the second solenoid valve, the parking circuit air cylinder is connected to the air handling unit via the third solenoid valve, the auxiliary circuit air cylinder is connected to the air handling unit via the fourth solenoid valve, and the electric air compressor is connected to the air handling unit, all of which may refer to connections including but not limited to gas pipelines, etc. Based on this, the above-mentioned electric air compressor can be used to inflate the above-mentioned front circuit air cylinder, rear circuit air cylinder, parking circuit air cylinder, auxiliary circuit air cylinder, etc. The above-mentioned first solenoid valve, second solenoid valve, third solenoid valve, and fourth solenoid valve can be closed when the power is off to connect the gas pipelines at both ends, so that the gas filled by the above-mentioned electric air compressor can smoothly enter the air cylinder of the circuit corresponding to the solenoid valve, and can be disconnected when the power is on to block the circuits at both ends, so that the gas filled by the above-mentioned electric air compressor cannot enter the air cylinder of the circuit corresponding to the solenoid valve, and the above-mentioned first solenoid valve, second solenoid valve, third solenoid valve, and fourth solenoid valve can be independently arranged at the interface between the gas pipelines of the circuits where the above-mentioned front circuit air cylinder, rear circuit air cylinder, parking circuit air cylinder, and auxiliary circuit air cylinder are located and the above-mentioned air treatment unit, and can also be integrated in the above-mentioned air treatment unit.

[0052] For example, the relationship between the four solenoid valves and the air cylinders in each circuit may be, for example, that when the first solenoid valve is powered off and closed, the circuit between the front circuit air cylinder and the electric air compressor is connected, and the front circuit air cylinder can accept the air charge from the electric air compressor, and when the first solenoid valve is powered on and disconnected, the circuit between the front circuit air cylinder and the electric air compressor is blocked, and the front circuit air cylinder no longer accepts the air charge from the electric air compressor; by analogy, when the second solenoid valve is powered off and closed, the circuit between the rear circuit air cylinder and the electric air compressor is connected, and the rear circuit air cylinder can accept the air charge from the electric air compressor, and when the second solenoid valve is powered on and disconnected, the circuit between the rear circuit air cylinder and the electric air compressor is blocked, and the rear circuit air cylinder no longer accepts the air charge from the electric air compressor, and the subsequent relationship between the third solenoid valve and the parking circuit air cylinder, and the relationship between the fourth solenoid valve and the auxiliary circuit air cylinder are the same and will not be described in detail.

[0053] Of course, the specific type, model and structure of the above-mentioned vehicle controller is an electronic terminal, the specific type, model and structure of the components used to connect the above-mentioned circuit air cylinders, each solenoid valve and the air handling unit, the models and specifications of the above-mentioned circuit air cylinders and each solenoid valve can be selected and determined according to actual conditions, and are not limited here.

[0054] For example, the connection between the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the vehicle controller, as well as the connection between the electric air compressor and the vehicle controller, may refer to, but is not limited to, communication connection.

[0055] The above-mentioned air processing unit may, for example, include an air filter element, an air flow sensor, etc., to filter and measure the air flowing through the air processing unit, wherein the above-mentioned air flow sensor (if any) may be communicatively connected with the above-mentioned vehicle controller. In addition, the above-mentioned front circuit air cylinder, rear circuit air cylinder, parking circuit air cylinder, and auxiliary circuit air cylinder may be provided with an air pressure sensor, which may be used to monitor the air pressure values ​​in the above-mentioned front circuit air cylinder, rear circuit air cylinder, parking circuit air cylinder, and auxiliary circuit air cylinder, and the air pressure sensor may also be communicatively connected with the above-mentioned vehicle controller. Exemplarily, the above-mentioned communication connection may, for example, adopt a communication protocol such as CAN (Controller Area Network) communication protocol and LIN (Local Interconnect Network) communication protocol.

[0056] Please refer to Figure 1 , for the convenience of distinction, Figure 1In the figure, solid lines represent the connections of the above-mentioned gas pipelines, etc., and dotted lines represent the above-mentioned communication connections, etc.

[0057] It is understandable that the above contents are only possible examples. The specific communication protocol used to implement the above communication connection, the specific components included in the above air handling unit, the specific model of the above air pressure sensor, etc. can all be selected and determined according to actual needs and are not limited here.

[0058] In addition, if the air pressure sensor detects that the air pressure values ​​in the front circuit air reservoir, rear circuit air reservoir, parking circuit air reservoir, and auxiliary circuit air reservoir are reduced when no braking or other air-using operations are performed, it can be explained that the circuit corresponding to the air reservoir with reduced air pressure may have a leak. At this time, the vehicle controller can remind the driver of the possible leakage of the braking system through devices such as vehicle instruments. Of course, how to judge the possible leakage of the braking system through the monitoring value of the air pressure sensor and how to remind the driver can be determined according to the actual situation and are not limited here. For example, when a leakage in a certain circuit is detected, the corresponding circuit solenoid valve can be controlled to be disconnected, thereby preventing the gas in other circuits from leaking.

[0059] The braking system provided in the embodiment of the present application includes: a vehicle controller, an electric air compressor, an air processing unit, a front circuit air reservoir, a rear circuit air reservoir, a parking circuit air reservoir, an auxiliary circuit air reservoir, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve; the front circuit air reservoir is connected to the air processing unit through the first solenoid valve, the rear circuit air reservoir is connected to the air processing unit through the second solenoid valve, the parking circuit air reservoir is connected to the air processing unit through the third solenoid valve, and the auxiliary circuit air reservoir is connected to the air processing unit through the fourth solenoid valve; the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve The magnetic valves are all connected to the above-mentioned vehicle controller; the above-mentioned electric air compressor is connected to the above-mentioned vehicle controller and the above-mentioned air handling unit; when it is determined that the current braking condition of the vehicle is an emergency condition, the on-off of the above-mentioned first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled according to a preset emergency strategy, and then the above-mentioned electric air compressor is controlled to selectively inflate the above-mentioned front circuit air cylinder, the rear circuit air cylinder, the parking circuit air cylinder, and the auxiliary circuit air cylinder, so that during the emergency condition, the limited air filling volume of the electric air compressor is preferentially used to inflate the air cylinder of the circuit that can most quickly improve the braking efficiency, thereby ensuring that the vehicle's brake air pressure is sufficient to the greatest extent, thereby improving the emergency braking performance of new energy vehicles when the brake air pressure is low.

[0060] Figure 2This is a schematic flow chart of a braking system control method provided in an embodiment of the present application. The execution subject of the method may be a vehicle controller in the above braking system, such as Figure 2 As shown, the method may include:

[0061] S201. Collect and obtain the displacement of the brake pedal, wherein the displacement of the brake pedal includes: the displacement distance of the brake pedal and the displacement speed of the brake pedal.

[0062] Exemplarily, the above-mentioned brake pedal displacement sensor installed at the vehicle cabin brake pedal can detect the displacement distance and displacement speed of the above-mentioned brake pedal. The displacement distance of the above-mentioned brake pedal can refer to the depth or degree of the driver's stepping on the brake pedal, and the displacement speed of the above-mentioned brake pedal can refer to the speed or urgency of the driver's stepping on the brake pedal. The brake pedal displacement sensor can be connected to the vehicle controller for communication, and send the detected displacement distance and displacement speed of the brake pedal to the vehicle controller. The above-mentioned communication connection can be, for example, a CAN communication protocol, a LIN communication protocol, and other communication protocols. Of course, the above content is only a possible example. How to collect and obtain the displacement of the above-mentioned brake pedal, what type of the above-mentioned brake pedal displacement sensor is, and what communication protocol is used to achieve communication connection between the above-mentioned brake pedal displacement sensor and the above-mentioned vehicle controller, etc., can all be selected and determined according to actual needs, and are not limited here.

[0063] The frequency of the brake pedal displacement sensor etc. collecting and acquiring the displacement of the brake pedal may be real-time or periodic, such as once every 10 milliseconds or once every 100 milliseconds. There is no limitation on this. However, it is understandable that due to the suddenness of emergency braking behavior, real-time collection and acquisition of the displacement of the brake pedal can usually help to judge the current braking condition more promptly. The displacement distance of the brake pedal may be expressed in units such as centimeters or angle units such as degrees. For example, if the travel of a brake pedal from its initial position to its maximum travel position is 12 centimeters, then The displacement distance range of the brake pedal can be 0 to 12 cm. For example, the rotation angle of a brake pedal from the initial position to the maximum stroke position is 30°, then the displacement distance range of the pedal can be 0° to 30°. Corresponding to the unit of the displacement distance of the brake pedal, the unit of the displacement speed of the brake pedal can be, for example, cm / s, degrees / s, etc., such as 12 cm / s or 17° / s, etc. Of course, the above content is only possible examples. How to specifically express the displacement distance of the brake pedal and the displacement speed of the brake pedal can be selected and determined according to actual conditions, and is not limited to the above content.

[0064] S202. Determine the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and a preset braking condition determination rule.

[0065] Exemplarily, the above-mentioned preset braking condition judgment rule can be, for example, when the displacement distance of the brake pedal or the displacement speed of the brake pedal is greater than the corresponding preset value of the brake pedal (it can be understood that the greater the displacement distance of the brake pedal, the deeper the driver steps on the brake pedal, and the greater the braking pressure, i.e., the braking force, is achieved; the greater the displacement speed of the brake pedal, the more urgently the driver steps on the brake pedal, and the faster the braking reaction speed is achieved), determine that the current braking condition is an emergency condition, otherwise it is a non-emergency condition. Different strategies can be adopted to control the above-mentioned braking system for the above-mentioned emergency conditions and non-emergency conditions.

[0066] When it is determined that the current braking condition is a non-emergency condition, for example, a preset non-emergency strategy can be executed. The preset non-emergency strategy can, for example, detect whether the air pressure in the front circuit air cylinder and the rear circuit air cylinder reaches a certain preset air cylinder pressure. When the air pressure in the air cylinder does not reach the preset air cylinder pressure, start the electric air compressor to inflate the air cylinder. Under normal circumstances, the preset non-emergency strategy may not control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve, that is, when the electric air compressor is started, it can inflate the front circuit air cylinder, the rear circuit air cylinder, the parking circuit air cylinder, the auxiliary circuit air cylinder, etc. at the same time. Although the inflation speed is slow, due to the current non-emergency condition, the above problem will not significantly affect driving safety.

[0067] Of course, the above contents are only possible examples. The specific contents of the above-mentioned preset braking condition judgment rules, the specific preset values ​​of the brake pedal corresponding to the displacement distance of the above-mentioned brake pedal or the displacement speed of the brake pedal, how the above-mentioned braking conditions are divided, and what kind of preset non-emergency strategies are implemented under the above-mentioned non-emergency conditions, etc., can all be selected and determined according to actual conditions and are not limited here.

[0068] S203: If the current braking condition is an emergency condition, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to be on and off according to a preset emergency strategy.

[0069] According to the above examples, if the electric air compressor is started to inflate the front circuit air cylinder, rear circuit air cylinder, parking circuit air cylinder, auxiliary circuit air cylinder, etc. at the same time, the air cylinder that has not reached the preset air cylinder pressure may receive less air, that is, the inflation speed is slower. In non-emergency conditions, the above problem will not significantly affect driving safety. However, in emergency conditions, if the air cylinder that has not reached the preset air cylinder pressure cannot be inflated in time, there may be a major safety hazard due to insufficient braking force. Therefore, the current braking condition is emergency. In case of emergency, the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are controlled according to the preset emergency strategy. The purpose of this control, for example, is to temporarily block the connection between the circuit corresponding to the air cylinder that reaches the preset air cylinder pressure and the electric air compressor through the four solenoid valves, so that the electric air compressor only inflates the air cylinders of the front circuit and the rear circuit that have not reached the preset air pressure, and even temporarily block the connection between all other circuits and the electric air compressor, so that the electric air compressor only inflates the air cylinder that needs to be inflated the most. Of course, the above content is only a possible example, and the specific preset emergency strategy can be selected and determined according to the actual situation, and is not limited here.

[0070] In this embodiment, the displacement of the brake pedal is collected and obtained, wherein the displacement of the brake pedal includes: the displacement distance of the brake pedal and the displacement speed of the brake pedal; the current braking condition is judged according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and the preset braking condition judgment rule; if the current braking condition is an emergency condition, the on-off of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are controlled according to the preset emergency strategy. By collecting and obtaining the displacement of the brake pedal, the current braking condition is judged according to the displacement of the brake pedal, and the corresponding braking system control strategy is selected and executed according to the current braking condition, so that during the emergency condition, the limited air filling volume of the electric air compressor is preferentially used to fill the air cylinder of the circuit that can most quickly improve the braking efficiency, so as to ensure that the vehicle's brake air pressure is sufficient to the greatest extent, thereby improving the emergency braking performance of new energy vehicles when the brake air pressure is low.

[0071] Further, in Figure 2 Based on the embodiment, judging the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and the preset braking condition judgment rule may include:

[0072] If the displacement distance of the brake pedal is greater than a preset brake pedal displacement distance, and / or the displacement speed of the brake pedal is greater than a preset brake pedal displacement speed, it is determined that the current braking condition is an emergency condition.

[0073] For example, if the above-mentioned preset brake pedal displacement distance is 10 cm, and the above-mentioned preset brake pedal displacement speed is 13 cm / s, then ① when the above-mentioned brake pedal displacement sensor collects and obtains the displacement distance of the above-mentioned brake pedal as 12 cm, and the displacement speed of the above-mentioned brake pedal is 12 cm / s (that is, the displacement distance of the brake pedal is greater than the preset brake pedal displacement distance), or ② when the above-mentioned brake pedal displacement sensor collects and obtains the displacement distance of the above-mentioned brake pedal as 8 cm, and the displacement speed of the above-mentioned brake pedal is 15 cm / s (that is, the displacement speed of the brake pedal is greater than the preset brake pedal displacement speed), or ③ when the above-mentioned brake pedal displacement sensor collects and obtains the displacement distance of the above-mentioned brake pedal as 12 cm, and the displacement speed of the above-mentioned brake pedal is 15 cm / s (that is, the displacement distance of the brake pedal is greater than the preset brake pedal displacement distance and the displacement speed of the brake pedal is greater than the preset brake pedal displacement speed), it can be determined that the current braking condition is an emergency condition.

[0074] Of course, the above contents are only possible examples, and the specific preset brake pedal displacement distance and preset brake pedal displacement speed can be selected and determined according to actual conditions, and are not limited to the contents in the above distances.

[0075] Figure 3 A schematic flow chart of a brake system control method provided in another embodiment of the present application is shown in FIG. Figure 3 As shown, based on the above embodiment, if the current braking condition is an emergency condition, controlling the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to a preset emergency strategy may include:

[0076] S301. If the current braking condition is the emergency condition, the air pressure of the front circuit air reservoir and the air pressure of the rear circuit air reservoir are collected and acquired.

[0077] Exemplarily, the air pressure of the front-loop air tank and the air pressure of the rear-loop air tank may be collected and acquired by, for example, air pressure sensors provided in the front-loop air tank and the rear-loop air tank, but the present invention is not limited thereto.

[0078] S302. If the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both less than or equal to the preset air tank pressure, start the electric air compressor and collect the working status of the anti-lock braking device, wherein the anti-lock braking device includes: a front wheel anti-lock braking device and a rear wheel anti-lock braking device.

[0079] Under normal circumstances, the air pressure of the above-mentioned front-loop air tank and the air pressure of the above-mentioned rear-loop air tank will basically remain consistent, and it is not easy for the air pressure of the above-mentioned front-loop air tank and the air pressure of the above-mentioned rear-loop air tank to have a significant difference. Therefore, the air pressure of the above-mentioned front-loop air tank and the air pressure of the above-mentioned rear-loop air tank can exist in two situations: ① both are less than or equal to the above-mentioned preset air tank air pressure, or ② both are greater than the above-mentioned preset air tank air pressure.

[0080] When the air pressure of the front loop air reservoir and the air pressure of the rear loop air reservoir are both less than or equal to the preset air reservoir pressure, it can be reflected that the front loop air reservoir and the rear loop air reservoir need to be inflated. However, since the current braking condition is an emergency condition, the electric air compressor can be started and the working state of the anti-lock braking device can be acquired. The working state of the anti-lock braking device can reflect the lack of braking force of the front and rear wheels, and further reflect the urgency of the front loop air reservoir and the rear loop air reservoir to be inflated. The anti-lock braking device can be connected to the vehicle controller for communication, so the working state of the anti-lock braking device can be directly acquired by the vehicle controller. Of course, the above content is only a possible example. How to obtain the working state of the anti-lock braking device, how to judge the urgency of the front loop air reservoir and the rear loop air reservoir to be inflated according to the working state of the anti-lock braking device, etc. can be selected and determined according to the actual situation, and no limitation is made here.

[0081] S303, according to the working state of the anti-lock braking device, select and execute the corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve.

[0082] According to the above examples, the working status of the anti-lock braking device can reflect the degree of lack of braking force of the front and rear wheels, and further reflect the urgency of the front circuit air cylinder and the rear circuit air cylinder needing to be inflated. Therefore, after collecting and obtaining the working status of the anti-lock braking device, the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve can be controlled to ensure that the electric air compressor only inflates the air cylinder that most needs inflation.

[0083] It can be understood that the above content is only a possible example. The specific method of controlling the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve according to the working state of the anti-lock braking device can be selected and determined according to actual conditions and is not limited here.

[0084] In this embodiment, if the current braking condition is the emergency condition, the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are collected and obtained; if the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both less than or equal to the preset air tank pressure, the electric air compressor is started and the working state of the anti-lock braking device is collected and obtained, wherein the anti-lock braking device includes: a front-wheel anti-lock braking device and a rear-wheel anti-lock braking device; according to the working state of the anti-lock braking device, the corresponding preset emergency strategy is selected to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve. By collecting the working status of the anti-lock braking device when the air pressure of the front circuit air tank and the air pressure of the above-mentioned rear circuit air tank are both less than or equal to the above-mentioned preset air tank pressure under emergency conditions, it is possible to judge the air tank that currently needs to be inflated most according to the working status of the anti-lock braking device, so that during emergency conditions, the limited air filling volume of the electric air compressor is used preferentially to inflate the air tank of the circuit that can most quickly improve the braking efficiency, thereby ensuring that the vehicle's brake air pressure is sufficient to the greatest extent, thereby improving the emergency braking performance of new energy vehicles when the brake air pressure is low.

[0085] Further, based on the above embodiment, the above method of selecting and executing a corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to the working state of the anti-lock braking device may include:

[0086] If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, the first solenoid valve and the second solenoid valve are controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

[0087] Exemplarily, the working state of the anti-lock braking device is that the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, which may be due to sufficient braking force or because the tires slip due to smooth road surface. Therefore, under the premise that the air pressure of the front circuit air reservoir and the air pressure of the rear circuit air reservoir are both less than or equal to the preset air reservoir pressure, the electric air compressor can still be started to inflate the front circuit air reservoir and the rear circuit air reservoir. However, at this time, since the working states of the front wheel anti-lock braking device and the rear wheel anti-lock braking device are the same, it is impossible to determine which of the front circuit air reservoir and the rear circuit air reservoir needs to be inflated more based on the working state of the anti-lock braking device, so the first electromagnetic air compressor can be closed at the same time. Valve and the second solenoid valve, but keep the third solenoid valve and the fourth solenoid valve disconnected, and inflate the front circuit air cylinder and the rear circuit air cylinder at the same time. When the air pressure of the front circuit air cylinder and the air pressure of the rear circuit air cylinder are both greater than the preset air cylinder pressure, close the third solenoid valve and the fourth solenoid valve. At this time, the electric air compressor inflates the front circuit air cylinder, the rear circuit air cylinder, the parking circuit air cylinder and the auxiliary circuit air cylinder at the same time until the dryer is unloaded, that is, the front circuit air cylinder, the rear circuit air cylinder, the parking circuit air cylinder and the auxiliary circuit air cylinder in the braking system have been inflated. At this time, the electric air compressor can be turned off to stop charging.

[0088] Optionally, in Figure 3 Based on the embodiment, the above-mentioned selecting and executing the corresponding preset emergency strategy to control the on and off of the above-mentioned first solenoid valve, the above-mentioned second solenoid valve, the above-mentioned third solenoid valve, and the above-mentioned fourth solenoid valve according to the working state of the above-mentioned anti-lock braking device may include:

[0089] If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is not activated, the second solenoid valve is controlled to be closed until the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, or the air pressure in the rear circuit air tank is greater than the preset air tank pressure, the first solenoid valve is controlled to be closed until the air pressure in the front circuit air tank and the air pressure in the rear circuit air tank are both greater than the preset air tank pressure, the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

[0090] If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is activated, the first solenoid valve is controlled to be closed until the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, or the air pressure of the front circuit air tank is greater than the preset air tank pressure, the second solenoid valve is controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

[0091] Exemplarily, the activation of the front wheel anti-lock braking device and the inactivation of the rear wheel anti-lock braking device can reflect that the rear circuit air tank needs to be inflated the most, so the second solenoid valve can be controlled to be closed first, but the first solenoid valve, the third solenoid valve and the fourth solenoid valve are kept disconnected, so that the electric air compressor can only inflate the rear circuit air tank, and after the front wheel anti-lock braking device and the rear wheel anti-lock braking device are activated, or the air pressure in the rear circuit air tank is greater than the preset air pressure, that is, the rear circuit air tank is not short of air, the first solenoid valve is controlled to be closed, but the third solenoid valve and the fourth solenoid valve are kept disconnected. Open, at this time, the electric air compressor inflates the front circuit air tank and the rear circuit air tank at the same time. After the front circuit air tank pressure and the rear circuit air tank pressure are both greater than the preset air tank pressure, the third solenoid valve and the fourth solenoid valve are controlled to be closed. At this time, the electric air compressor inflates the front circuit air tank, the rear circuit air tank, the parking circuit air tank and the auxiliary circuit air tank at the same time until the dryer is unloaded, that is, the front circuit air tank, the rear circuit air tank, the parking circuit air tank and the auxiliary circuit air tank in the braking system have been inflated. At this time, the electric air compressor can be turned off to stop charging.

[0092] Similarly, the fact that the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is activated can reflect that the front circuit air tank needs to be inflated the most, so the first solenoid valve can be controlled to be closed first, but the second solenoid valve, the third solenoid valve and the fourth solenoid valve are kept disconnected, so that the electric air compressor can only inflate the front circuit air tank, and after the front wheel anti-lock braking device and the rear wheel anti-lock braking device are activated, or the air pressure in the front circuit air tank is greater than the preset air tank pressure, that is, the front circuit air tank is not short of air, the second solenoid valve can be controlled to be closed, and the subsequent process is consistent with the above example and will not be repeated here.

[0093] In addition, Figure 3 Based on the embodiment, the above-mentioned selecting and executing the corresponding preset emergency strategy to control the on and off of the above-mentioned first solenoid valve, the above-mentioned second solenoid valve, the above-mentioned third solenoid valve, and the above-mentioned fourth solenoid valve according to the working state of the above-mentioned anti-lock braking device may include:

[0094] If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is not activated, the first solenoid valve and the second solenoid valve are controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

[0095] Exemplarily, the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is not activated, and it is impossible to determine which of the front circuit air cylinder and the rear circuit air cylinder needs to be inflated based on the working state of the anti-lock braking device. Therefore, the first solenoid valve and the second solenoid valve can be closed at the same time, but the third solenoid valve and the fourth solenoid valve are kept disconnected, and the front circuit air cylinder and the rear circuit air cylinder are inflated at the same time. When the air pressure of the front circuit air cylinder and the air pressure of the rear circuit air cylinder are both greater than the preset air cylinder pressure, the third solenoid valve and the fourth solenoid valve are closed again. At this time, the electric air compressor inflates the front circuit air cylinder, the rear circuit air cylinder, the parking circuit air cylinder, and the auxiliary circuit air cylinder at the same time until the dryer is unloaded, that is, the front circuit air cylinder, the rear circuit air cylinder, the parking circuit air cylinder, and the auxiliary circuit air cylinder in the braking system have all been inflated. At this time, the electric air compressor can be turned off to stop charging.

[0096] Figure 4 Schematic diagram of the structure of a brake system control device provided in an embodiment of the present application. The brake system control device can execute the above-mentioned brake system control method. The device can be integrated into, for example, the above-mentioned vehicle controller, such as Figure 4 As shown, the device comprises:

[0097] The acquisition module 410 is used to acquire the displacement of the brake pedal, wherein the displacement of the brake pedal includes: the displacement distance of the brake pedal and the displacement speed of the brake pedal.

[0098] The judgment module 420 is used to judge the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and the preset braking condition judgment rule.

[0099] The control module 430 is used to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to a preset emergency strategy if the current braking condition is an emergency condition.

[0100] In this embodiment, the displacement of the brake pedal is collected and acquired, wherein the displacement of the brake pedal includes: the displacement distance of the brake pedal and the displacement speed of the brake pedal; the current braking condition is judged according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and preset braking condition judgment rules; if the current braking condition is an emergency condition, the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are controlled according to the preset emergency strategy. By collecting and acquiring the displacement of the brake pedal, it is achieved that when it is determined that the current braking condition of the vehicle is an emergency condition, the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled according to a preset emergency strategy, and then the electric air compressor is controlled to selectively inflate the front circuit air cylinder, the rear circuit air cylinder, the parking circuit air cylinder, and the auxiliary circuit air cylinder, so that during the emergency condition, the limited air filling volume of the electric air compressor is preferentially used to inflate the air cylinder of the circuit that can most quickly improve the braking efficiency, thereby ensuring that the vehicle's brake air pressure is sufficient to the greatest extent, thereby improving the emergency braking performance of new energy vehicles when the brake air pressure is low.

[0101] Optionally, the judgment module 420 is specifically used to determine that the current braking condition is an emergency condition if the displacement distance of the brake pedal is greater than a preset brake pedal displacement distance, and / or the displacement speed of the brake pedal is greater than a preset brake pedal displacement speed.

[0102] Optionally, the control module 430 is specifically used to collect and obtain the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank if the current braking condition is the emergency condition; if the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both less than or equal to the preset air tank pressure, start the electric air compressor and collect and obtain the working status of the anti-lock braking device, wherein the anti-lock braking device includes: a front-wheel anti-lock braking device and a rear-wheel anti-lock braking device; according to the working status of the anti-lock braking device, select and execute the corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve.

[0103] Optionally, the control module 430 is specifically used to control the first solenoid valve and the second solenoid valve to close if the working state of the anti-lock braking device is that the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and then control the third solenoid valve and the fourth solenoid valve to close until the electric air compressor is turned off after the dryer is unloaded.

[0104] Optionally, the control module 430 is specifically configured to control the second solenoid valve to close if the working state of the anti-lock braking device is that the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is not activated, until the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, or the air pressure of the rear circuit air reservoir is greater than the preset air reservoir pressure, control the first solenoid valve to close until the air pressure of the front circuit air reservoir and the air pressure of the rear circuit air reservoir are both greater than the preset air reservoir pressure, control the third solenoid valve and the fourth solenoid valve to close until the dryer is unloaded and closed. Close the above-mentioned electric air compressor; if the working state of the above-mentioned anti-lock braking device is that the above-mentioned front-wheel anti-lock braking device is not activated and the above-mentioned rear-wheel anti-lock braking device is activated, then control the above-mentioned first solenoid valve to close until the above-mentioned front-wheel anti-lock braking device is activated and the above-mentioned rear-wheel anti-lock braking device is activated, or the air pressure of the front circuit air tank is greater than the above-mentioned preset air tank air pressure, control the above-mentioned second solenoid valve to close, until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the above-mentioned preset air tank pressure, control the above-mentioned third solenoid valve and the above-mentioned fourth solenoid valve to close, until the above-mentioned electric air compressor is closed after the above-mentioned dryer is unloaded.

[0105] Optionally, the control module 430 is specifically used to control the first solenoid valve and the second solenoid valve to close if the working state of the anti-lock braking device is that the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is not activated, until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, or the front wheel anti-lock braking device is activated, or the rear wheel anti-lock braking device is activated, and then control the third solenoid valve and the fourth solenoid valve to close until the electric air compressor is turned off after the dryer is unloaded.

[0106] The above-mentioned device is used to execute the method provided by the aforementioned embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0107] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, the electronic device may be, for example, the above-mentioned vehicle controller, such as Figure 5 As shown, the device 500 includes:

[0108] Processor 510 , storage medium 520 and bus 530 . Processor 510 and storage medium 520 are communicatively connected via bus 530 .

[0109] The storage medium 520 stores machine-readable instructions executable by the processor 510. When the electronic device is running, the processor 510 executes the machine-readable instructions to perform the braking system control method.

[0110] It should be understood that Figure 5The structure shown is only a schematic diagram of the structure of the electronic device. The electronic device may also include Figure 5 More or fewer components as shown, or with Figure 5 Different configurations shown. Figure 5 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0111] In addition, an embodiment of the present application further provides a car, which may include a braking system as described in the aforementioned embodiment, or an electronic device as described in the aforementioned embodiment. Optionally, the car may be a new energy car.

[0112] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. When the computer program can be executed by a processor, the braking system control method described in the above method embodiment is implemented.

[0113] The computer-readable storage medium may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer-readable storage medium includes a non-transitory computer-readable storage medium. The computer-readable storage medium has storage space for program codes that execute any of the method steps in the above method. These program codes may be read from or written to one or more computer program products. The program code may be compressed, for example, in an appropriate form.

[0114] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and a part of the module, program segment or code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0115] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0116] If the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program codes.

[0117] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A braking system, characterized in that: include: Vehicle controller, electric air compressor, air handling unit, front circuit air reservoir, rear circuit air reservoir, parking circuit air reservoir, auxiliary circuit air reservoir, first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve; The front circuit air reservoir is connected to the air handling unit through the first solenoid valve, the rear circuit air reservoir is connected to the air handling unit through the second solenoid valve, the parking circuit air reservoir is connected to the air handling unit through the third solenoid valve, and the auxiliary circuit air reservoir is connected to the air handling unit through the fourth solenoid valve; The first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all connected to the vehicle controller; The electric air compressor is connected to the vehicle controller and the air handling unit.

2. A braking system control method, characterized in that: The vehicle controller used in the braking system of claim 1, the method comprising: Acquiring the displacement of the brake pedal, wherein the displacement of the brake pedal includes: the displacement distance of the brake pedal and the displacement speed of the brake pedal; Determining the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and a preset braking condition determination rule; If the current braking condition is an emergency condition, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to be on and off according to a preset emergency strategy.

3. The method according to claim 2, characterized in that The determining the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and a preset braking condition determination rule comprises: If the displacement distance of the brake pedal is greater than a preset brake pedal displacement distance, and / or the displacement speed of the brake pedal is greater than a preset brake pedal displacement speed, it is determined that the current braking condition is an emergency condition.

4. The method according to claim 3, characterized in that: If the current braking condition is an emergency condition, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled on and off according to a preset emergency strategy, including: If the current braking condition is the emergency condition, collecting and acquiring the air pressure of the front circuit air reservoir and the air pressure of the rear circuit air reservoir; If the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both less than or equal to the preset air tank pressure, the electric air compressor is started and the working state of the anti-lock braking device is acquired, wherein the anti-lock braking device includes: a front wheel anti-lock braking device and a rear wheel anti-lock braking device; According to the working state of the anti-lock braking device, a corresponding preset emergency strategy is selected to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve.

5. The method according to claim 4, characterized in that The method of selecting and executing a corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to the working state of the anti-lock braking device includes: If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, the first solenoid valve and the second solenoid valve are controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

6. The method according to claim 4, characterized in that The method of selecting and executing a corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to the working state of the anti-lock braking device includes: If the working state of the anti-lock device is that the front wheel anti-lock device is activated and the rear wheel anti-lock device is not activated, the second solenoid valve is controlled to be closed until the front wheel anti-lock device is activated and the rear wheel anti-lock device is activated, or the air pressure of the rear circuit air reservoir is greater than the preset air reservoir pressure, the first solenoid valve is controlled to be closed until the air pressure of the front circuit air reservoir and the air pressure of the rear circuit air reservoir are both greater than the preset air reservoir pressure, the third solenoid valve and the fourth solenoid valve are controlled to be closed until the dryer is unloaded and the electric air compressor is turned off; If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is activated, the first solenoid valve is controlled to be closed until the front wheel anti-lock braking device is activated and the rear wheel anti-lock braking device is activated, or the air pressure of the front circuit air tank is greater than the preset air tank pressure, the second solenoid valve is controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

7. The method according to claim 4, characterized in that The method of selecting and executing a corresponding preset emergency strategy to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to the working state of the anti-lock braking device includes: If the working state of the anti-lock braking device is that the front wheel anti-lock braking device is not activated and the rear wheel anti-lock braking device is not activated, the first solenoid valve and the second solenoid valve are controlled to be closed until the air pressure of the front circuit air tank and the air pressure of the rear circuit air tank are both greater than the preset air tank pressure, and the third solenoid valve and the fourth solenoid valve are controlled to be closed until the electric air compressor is turned off after the dryer is unloaded.

8. A braking system control device, characterized in that: include: A collection module, used for collecting and acquiring the displacement of the brake pedal, wherein the displacement of the brake pedal includes: the displacement distance of the brake pedal and the displacement speed of the brake pedal; A judgment module, used for judging the current braking condition according to the displacement distance of the brake pedal, the displacement speed of the brake pedal and a preset braking condition judgment rule; The control module is used to control the on and off of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve according to a preset emergency strategy if the current braking condition is an emergency condition.

9. An electronic device, characterized in that: include: A processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, the processor and the storage medium communicate via the bus, and the processor executes the machine-readable instructions to perform the method as described in any one of claims 2-7.

10. An automobile, characterized in that: The automobile comprises the braking system according to claim 1 or the electronic device according to claim 9.

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